S&G 6804

=Sargent & Greenlead 6800=

The 6804 (or 6805, 6824, 6825) is a user-rekeyable lever lock made by Sargent & Greenleaf. It is one of the few keyed safe locks made by Sargent & Greenleaf, and one of the few lever locks that can be rekeyed without disassembly of the lock mechanism.

Principles of operation
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Model variations
There are several models of the 6800 based on key-retaining and bitting surfaces:

6804: Key retaining, single bitted 6824: Key retaining, double bitted 6805: Non-key retaining, single bitted 6825: Non-key retaining, double bitted

Key change instructions

 * 6804/6824


 * Insert working key and rotate clockwise.
 * Turn the fence clamp screw on the back of the lock four times counterclockwise with the change wrench.
 * Rotate the working key clockwise and remove it.
 * Insert new key and rotate counterclockwise until it stops.
 * Tighten the fence clamp screw four times clockwise.
 * Rotate key counterclockwise and remove the key.
 * Test the new key.


 * 6805/6825


 * Insert working key and rotate 180&deg; clockwise then remove the key. Single bitted keys (6805) should be inserted with key bitting facing the bolt.
 * Turn the fence clamp screw on the back of the lock four times counterclockwise with the change wrench.
 * Insert the new key
 * Tighten the fence clamp screw four times clockwise.
 * Rotate key counterclockwise and remove the key.
 * Test the new key.

Disassembly instructions
The 6800 series are easy to disassemble. Simply remove the casing screws from the back of the lock and remove the components. Because all levers are identical there is no need to preserve their order. Note that breaking the seal on the back cover of the lock may void manufacturer or distributor warranty.

Vulnerabilities
The 6804 may be vulnerable to one or more of the following:


 * Lockpicking
 * Impressioning
 * Decoding